#include<stdio.h>

void swap(int *a, int *b)
{
    int temp;
    temp = *a;
    *a = *b;
    *b = temp;
}

int main(void)
{
    int a,b;
    scanf("%d %d",&a,&b);

    swap(&a,&b);

    printf("%d %d",a,b);
}